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annotate pkg/imports/wx.go @ 3219:4acbee65275d

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Import queue: Split locked dependencies in exclusively and multiple uses.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 09 May 2019 12:49:53 +0200
parents 72451510d417
children 6c5c15b2fb64
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018, 2019 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13 // * Tom Gottfried <tom.gottfried@intevation.de>
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14
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15 package imports
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16
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17 import (
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18 "context"
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19 "database/sql"
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20 "encoding/json"
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21 "errors"
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22 "fmt"
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23 "io"
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24 "time"
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25
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26 "gemma.intevation.de/gemma/pkg/wfs"
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27 )
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28
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29 // WaterwayAxis is an import job to import
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30 // the waterway axes in form of line string geometries
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31 // and attribute data from a WFS service.
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32 type WaterwayAxis struct {
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33 // URL the GetCapabilities URL of the WFS service.
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34 URL string `json:"url"`
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35 // FeatureType selects the feature type of the WFS service.
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36 FeatureType string `json:"feature-type"`
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37 // SortBy works around misconfigured services to
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38 // establish a sort order to get the features.
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39 SortBy string `json:"sort-by"`
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40 // User is an optional username for Basic Auth.
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41 User string `json:"user,omitempty"`
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42 // Password is an optional password for Basic Auth.
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43 Password string `json:"password,omitempty"`
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44 }
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45
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46 // WXJobKind is the import queue type identifier.
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47 const WXJobKind JobKind = "wx"
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48
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49 type wxJobCreator struct{}
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50
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51 func init() {
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52 RegisterJobCreator(WXJobKind, wxJobCreator{})
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53 }
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54
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55 func (wxJobCreator) Description() string { return "waterway axis" }
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56
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57 func (wxJobCreator) AutoAccept() bool { return true }
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58
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59 func (wxJobCreator) Create() Job { return new(WaterwayAxis) }
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60
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61 func (wxJobCreator) Depends() [2][]string {
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62 return [2][]string{
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63 {"waterway_axis"},
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64 {},
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65 }
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66 }
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67
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68 // StageDone is a NOP for waterway axis imports.
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69 func (wxJobCreator) StageDone(context.Context, *sql.Tx, int64) error {
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70 return nil
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71 }
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72
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73 // CleanUp for waterway axis imports is a NOP.
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74 func (*WaterwayAxis) CleanUp() error { return nil }
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75
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76 type waterwayAxisProperties struct {
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77 ObjNam string `json:"hydro_objnam"`
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78 NObjNnm *string `json:"hydro_nobjnm"`
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79 }
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80
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81 const (
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82 deleteWaterwayAxisSQL = `
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83 WITH resp AS (
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84 SELECT users.current_user_area_utm() AS a
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85 )
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86 DELETE FROM waterway.waterway_axis
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87 WHERE pg_has_role('sys_admin', 'MEMBER')
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88 OR ST_Covers((SELECT a FROM resp),
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89 ST_Transform(wtwaxs::geometry, (SELECT ST_SRID(a) FROM resp)))
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90 `
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91
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92 insertWaterwayAxisSQL = `
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93 WITH resp AS (
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94 SELECT users.current_user_area_utm() AS a
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95 )
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96 INSERT INTO waterway.waterway_axis (wtwaxs, objnam, nobjnam)
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97 SELECT dmp.geom, $3, $4
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98 FROM ST_GeomFromWKB($1, $2::integer) AS new_line (new_line),
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99 ST_Dump(ST_Transform(ST_CollectionExtract(
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100 CASE WHEN pg_has_role('sys_admin', 'MEMBER')
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101 THEN ST_Node(ST_Transform(new_line,
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102 best_utm(ST_Transform(new_line, 4326))))
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103 ELSE ST_Intersection((SELECT a FROM resp),
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104 ST_Node(ST_Transform(new_line, (SELECT ST_SRID(a) FROM resp))))
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105 END,
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106 2), 4326)) AS dmp
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107 RETURNING id
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108 `
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109 )
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110
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111 // Do executes the actual waterway axis import.
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112 func (wx *WaterwayAxis) Do(
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113 ctx context.Context,
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114 importID int64,
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115 conn *sql.Conn,
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116 feedback Feedback,
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117 ) (interface{}, error) {
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118
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119 start := time.Now()
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120
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parents: 1677
diff changeset
121 feedback.Info("Import waterway axis")
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parents: 1677
diff changeset
122
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parents: 1677
diff changeset
123 feedback.Info("Loading capabilities from %s", wx.URL)
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parents: 1677
diff changeset
124 caps, err := wfs.GetCapabilities(wx.URL)
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
125 if err != nil {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
126 feedback.Error("Loading capabilities failed: %v", err)
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parents: 1677
diff changeset
127 return nil, err
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parents: 1677
diff changeset
128 }
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parents: 1677
diff changeset
129
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parents: 1677
diff changeset
130 ft := caps.FindFeatureType(wx.FeatureType)
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parents: 1677
diff changeset
131 if ft == nil {
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diff changeset
132 return nil, fmt.Errorf("Unknown feature type '%s'", wx.FeatureType)
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diff changeset
133 }
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parents: 1677
diff changeset
134
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parents: 1696
diff changeset
135 feedback.Info("Found feature type '%s", wx.FeatureType)
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
136
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parents: 1680
diff changeset
137 epsg, err := wfs.CRSToEPSG(ft.DefaultCRS)
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parents: 1680
diff changeset
138 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
139 feedback.Error("Unsupported CRS name '%s'", ft.DefaultCRS)
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parents: 1680
diff changeset
140 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
141 }
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parents: 1680
diff changeset
142
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parents: 1696
diff changeset
143 if wx.SortBy != "" {
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parents: 1696
diff changeset
144 feedback.Info("Features will be sorted by '%s'", wx.SortBy)
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parents: 1696
diff changeset
145 }
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1696
diff changeset
146
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56c8ef515d93 WFS downloader: Use new GML/GeoJSON factory function in gemma.
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parents: 2719
diff changeset
147 dl, err := wfs.GetFeatures(caps, wx.FeatureType, wx.SortBy)
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parents: 1677
diff changeset
148 if err != nil {
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parents: 1677
diff changeset
149 feedback.Error("Cannot create GetFeature URLs. %v", err)
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diff changeset
150 return nil, err
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parents: 1677
diff changeset
151 }
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parents: 1677
diff changeset
152
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parents: 1680
diff changeset
153 tx, err := conn.BeginTx(ctx, nil)
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parents: 1680
diff changeset
154 if err != nil {
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parents: 1680
diff changeset
155 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
156 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
157 defer tx.Rollback()
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parents: 1680
diff changeset
158
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
159 insertStmt, err := tx.PrepareContext(ctx, insertWaterwayAxisSQL)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
160 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
161 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
162 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
163 defer insertStmt.Close()
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
164
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parents: 1680
diff changeset
165 // Delete the old features.
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
166 if _, err := tx.ExecContext(ctx, deleteWaterwayAxisSQL); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
167 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
168 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
169
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parents: 1679
diff changeset
170 var (
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parents: 1764
diff changeset
171 unsupported = stringCounter{}
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diff changeset
172 missingProperties int
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parents: 1679
diff changeset
173 badProperties int
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parents: 2912
diff changeset
174 outside int
1681
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parents: 1680
diff changeset
175 features int
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de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
176 )
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parents: 1677
diff changeset
177
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parents: 2726
diff changeset
178 if err := dl.Download(wx.User, wx.Password, func(url string, r io.Reader) error {
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parents: 1828
diff changeset
179 feedback.Info("Get features from: '%s'", url)
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parents: 1677
diff changeset
180 rfc, err := wfs.ParseRawFeatureCollection(r)
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parents: 1677
diff changeset
181 if err != nil {
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parents: 1754
diff changeset
182 return fmt.Errorf("parsing GetFeature document failed: %v", err)
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parents: 1677
diff changeset
183 }
1681
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parents: 1680
diff changeset
184 if rfc.CRS != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
185 crsName := rfc.CRS.Properties.Name
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
186 if epsg, err = wfs.CRSToEPSG(crsName); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
187 feedback.Error("Unsupported CRS: %d", crsName)
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parents: 1680
diff changeset
188 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
189 }
1679
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parents: 1677
diff changeset
190 }
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parents: 1677
diff changeset
191
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parents: 1677
diff changeset
192 // No features -> ignore.
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parents: 1677
diff changeset
193 if rfc.Features == nil {
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parents: 1677
diff changeset
194 return nil
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parents: 1677
diff changeset
195 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
196
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parents: 1682
diff changeset
197 feedback.Info("Using EPSG: %d", epsg)
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parents: 1682
diff changeset
198
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parents: 2730
diff changeset
199 savepoint := Savepoint(ctx, tx, "feature")
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parents: 2730
diff changeset
200
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parents: 1677
diff changeset
201 for _, feature := range rfc.Features {
1681
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parents: 1680
diff changeset
202 if feature.Properties == nil || feature.Geometry.Coordinates == nil {
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parents: 1679
diff changeset
203 missingProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
204 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
205 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
206
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
207 var props waterwayAxisProperties
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
208
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
209 if err := json.Unmarshal(*feature.Properties, &props); err != nil {
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
210 badProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
211 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
212 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
213
1681
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
214 var nobjnam sql.NullString
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
215 if props.NObjNnm != nil {
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parents: 1680
diff changeset
216 nobjnam = sql.NullString{String: *props.NObjNnm, Valid: true}
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
217 }
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
218
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parents: 1677
diff changeset
219 switch feature.Geometry.Type {
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parents: 1677
diff changeset
220 case "LineString":
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parents: 1764
diff changeset
221 var l lineSlice
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
222 if err := json.Unmarshal(*feature.Geometry.Coordinates, &l); err != nil {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
223 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
224 }
2726
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
225 if err := storeLinestring(
1681
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
226 ctx,
2780
5850ac0f9ab6 Axis import: do not fail if one item fails.
Tom Gottfried <tom@intevation.de>
parents: 2730
diff changeset
227 savepoint,
2726
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
228 feedback,
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
229 l,
1681
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
230 epsg,
2726
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
231 props,
1681
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
232 nobjnam,
2937
0d79f5eec630 Fix logging in axis import
Tom Gottfried <tom@intevation.de>
parents: 2912
diff changeset
233 &outside,
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Tom Gottfried <tom@intevation.de>
parents: 2912
diff changeset
234 &features,
2726
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
235 insertStmt); err != nil {
1681
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236 return err
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237 }
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238 case "MultiLineString":
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239 var ls []lineSlice
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240 if err := json.Unmarshal(*feature.Geometry.Coordinates, &ls); err != nil {
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241 return err
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242 }
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243 for _, l := range ls {
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244 if err := storeLinestring(
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245 ctx,
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246 savepoint,
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247 feedback,
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248 l,
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249 epsg,
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250 props,
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251 nobjnam,
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252 &outside,
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253 &features,
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254 insertStmt); err != nil {
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255 return err
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256 }
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257 }
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258 default:
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259 unsupported[feature.Geometry.Type]++
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260 }
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261 }
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262 return nil
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263 }); err != nil {
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264 return nil, err
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265 }
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266
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267 if badProperties > 0 {
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268 feedback.Warn("Bad properties: %d", badProperties)
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269 }
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270
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271 if missingProperties > 0 {
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272 feedback.Warn("Missing properties: %d", missingProperties)
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273 }
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274
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275 if len(unsupported) != 0 {
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276 feedback.Warn("Unsupported types found: %s", unsupported)
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277 }
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parents: 1677
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278
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279 if outside > 0 {
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280 feedback.Info("Features outside responsibility area: %d", outside)
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281 }
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282
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parents: 1796
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283 if features == 0 {
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parents: 2855
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284 return nil, errors.New("No features found")
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parents: 1796
diff changeset
285 }
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parents: 1796
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286
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parents: 1680
diff changeset
287 if err = tx.Commit(); err == nil {
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parents: 1680
diff changeset
288 feedback.Info("Storing %d features took %s",
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289 features, time.Since(start))
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290 }
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291
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292 return nil, err
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parents:
diff changeset
293 }
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294
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295 func storeLinestring(
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296 ctx context.Context,
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297 savepoint func(func() error) error,
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298 feedback Feedback,
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299 l lineSlice,
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300 epsg int,
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301 props waterwayAxisProperties,
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302 nobjnam sql.NullString,
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303 outside, features *int,
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72451510d417 Remove expensive check with doubtful usefulness
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304 insertStmt *sql.Stmt,
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diff changeset
305 ) error {
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diff changeset
306 var id int
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diff changeset
307 err := savepoint(func() error {
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diff changeset
308 err := insertStmt.QueryRowContext(
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309 ctx,
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310 l.asWKB(),
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diff changeset
311 epsg,
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parents: 2730
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312 props.ObjNam,
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parents: 2730
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313 nobjnam,
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parents: 2730
diff changeset
314 ).Scan(&id)
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dff749c07ae0 Warn if imported axis linestrings cross each other
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diff changeset
315 return err
2937
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parents: 2912
diff changeset
316 })
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parents: 2912
diff changeset
317 switch {
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parents: 2912
diff changeset
318 case err == sql.ErrNoRows:
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parents: 2912
diff changeset
319 *outside++
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parents: 2912
diff changeset
320 // ignore -> filtered by responsibility_areas
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parents: 2912
diff changeset
321 return nil
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parents: 2912
diff changeset
322 case err != nil:
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323 feedback.Warn(handleError(err).Error())
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diff changeset
324 default:
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325 *features++
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diff changeset
326 }
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parents: 2723
diff changeset
327 return nil
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parents: 2723
diff changeset
328 }